Premium Leather & High-Resilience Cushion: Upholstered in high-quality, skin-friendly PU leather, this office chair offers a professional look and a soft touch while being water-resistant and easy to maintain. The seat is filled with high-density, high-resilience foam that provides firm yet comfortable support, ensuring the cushion maintains its shape and comfort even after prolonged daily use. Breathable Diamond-Grid & Ergonomic Backrest: The backrest features a unique diamond-stitched design that enhances airflow to keep you cool and comfortable throughout the day. Its ergonomically curved profile is engineered to fit the natural alignment of your spine, providing essential lumbar and back support to reduce fatigue and help you maintain a healthy sitting posture. Versatile Adjustments & Relaxing Rocking Function: Equipped with a 90° flip-up armrest design, this space-saving chair can be easily tucked under your desk to maximize floor space. It features smooth height adjustment to suit various desk levels and a 90°-115° rocking mode, allowing you to tilt back and relax during breaks. Heavy-Duty Stability & Reliable Build: Built with a reinforced frame and a high-performance gas lift that has passed rigorous safety tests, this task chair ensures long-term durability and rock-solid stability. With a certified weight capacity of up to 300lbs, it provides a secure and steady seating experience for a wide range of users. Quick Assembly with Tools Included: All necessary hardware, specialized tools, and a clear instruction manual are included in the package. One person can easily complete the entire setup within 20 minutes, making it a hassle-free addition to your home or corporate office.